Window glass guide



Jan. 7, 1936. D. A. GREENE WINDOW GLASS GUIDE Filed March 5, 1935 j y/f e /l'\ r111 I I V r,

Patented Jan. 7,1936 2,026,972

UNITED STATES PATENT OFFICE WINDOW GLASS GUIDE Daniel A. Greene, Flint, Mich.

Application March 5, 1935, Serial No. 9,411

10 Claims. (01. 29644.5)

, This invention relates to window glass guides slits b therein, which extend alternately from which are usually employed in connection with the opposite edges of the strip to within a short the frameless window glass of closed body autodistance from the opposite edge from which the mobiles, and which are adapted to be bent to conslit extends, this distance preferably approxi- 5 form to curved window casings, and to methods mating to the distance between adjacent slits. 6 of making the same. q i The strip is, therefore, not severed completely While guides of this type have been constructed across at any point and a single narrow strip with a wire core which-is bendable, the type of is formed, which extends alternately, crosswise guide which has been most. generally employed of the original strip as shown in Fig. 3. The

10 is provided with a core of thin sheet metal, which original strip is then subjected to longitudinal 10 is notched, or slit in a manner to permit bending. strain, so that each slit is opened into a V-shaped The primary objects of my invention are to proformation, and the narrow strip extends in zigvide a core for a guide of the sheet metal type, zag form, as shown in Fig. 4. This longitudinal and a method of making the same, which will stretching of the original strip necessarily causes enable a guide to be produced which shall have all a distortion of the zig-zag strip, all portions of 15 of the advantageous characteristics of guides of which will be tilted into positions which are inthis type which have previously been employed, clined to the plane of the original strip, as indibut which may be produced at a decreased manucated in Figs. 4 and 6. facturing cost. While thus held in stretched form, the inclined Iaccomplish this object primarily by providing portions are then forced back into the plane 20 a strip of thin sheet metal of uniform width, of the original strip byapressing operation. This transversely slitting the strip from each edge to may be done by pressing the distorted zig zag points adjacent the opposite edge alternately, strip between flat plates, or platens, but is prefthen stretching the strip thus formed, so that erably done by passing the same between press the oppositely extending adjacent portions exrolls c, as indicated in Fig. 6. As it is necessary 25 tend divergently from their point of connection, to keep the edges of the stretched strip in alignthereby producing a strip of zi g-zag form which ment, one of these rolls is circularly recessed or is approximately double the length of the original grooved, and the other is fitted therein, the width strip, and, as this stretching operation causes of the groove corresponding to the width of the the zig zag strip sections to be distorted, or instrip after stretching, so that after the strip has 30 clined to the plane of the original strip, a further been passed between the rolls, the twisted sections step in the process consists in restoring, said will lie fiat with their apices approximately in sections to a common plane by a pressing operastraight parallel lines, as shown in Figs. 5 and 6. tion, while held stretched, after which the op- It will be understood that the above described .35 eration of covering the strip with sheet material flattening operation will be merely a preliminary to which cushioning material is attached, will be portion of the subsequent rolling operation by performed. means of which the covered channel or guide is For a more complete disclosure of the invention formed, a textile covering, as d, being wrapped reference is made to the following specification about the stretched strip before, or as it is bent in connection with the accompanying drawing, into channel form, as indicated in Figs. '7 and 8, P in which: A this portion of the operation being substantially Fig. 1 is a side elevation illustrating a guide the same as that in general use. produced by my process installed in a window As it will ordinarily .be necessary to mount a casing. finish head of ornamental metal on the edges of Fig. 2 is a combined sectional and perspective the channel, this may be done by enlarging the 45 view of the finished guide on an enlarged scale. edge portions by various methods, several. of Figs. 3, 4,5, 'l and 8 are plan views, and Fig. 6 which are illustrated. As shown in Fig. 3, a is an edge view 'of a section of the core strip ilseries of short slits e may be formed in the edges lustrating difierent steps in the method. of the strip, and by a subsequent operation, the

l Figs. 9 and 10 are perspective and plan views edge portions may be bent laterally to form alter- 50 respectively illustrating modifications. nately oppositely extending tongues, as disclosed According tomy invention I provide a strip of in Bailey Patent No. 1,955,729 of April 24th, 1934,

thin sheet metal a of indefinite length and of a or the edge portionsmay be rolled over a wire uniform width, suitable to form a core for a winas shown in Fig. 9, or a wire 9 may bespotwelded 65 dow glass guide, and cut a series of transverse onto said edge portions, as shown in Fig. 10,

thereby providing, in each instance, enlarged edge portions about which the bead h may be clamped as shown in Fig. 2, in which the completed channel, having cushioning material attached to the textile covering d, is illustrated.

By means of the above described method, the length of the original strip of sheet metal may be increased by approximately and, at the same time, it is formed into a series of narrow transverse strips which are connected at the edges of the channel, so that it may be bent to correspond to the curvature of the window casing, the transverse strips being swung apart slightly by the bending operation and the textile covering therebetween being slightly stretched.

As will be noted, the principal advantage of the above described method consists in the saving of metal for forming the core, as no metal is removed, or wasted and the length of the finished channel which is produced from a strip of, metal of a certain length may be doubled, without impairment of its efllciency as a core for the channel.

I claim:

1. A glass run channel comprising a generally channel shaped core portion of flat continuous sheet metal having a base and side walls, said core portion having transverse slits extending alternately partly across the same from opposite edges of its sides, and the edges of said slits being spaced apart at their open ends.

2. A glass run channel comprising a generally :channel shaped core portion of flat, continuous sheet metal, said core portion having transverse slits extending alternately from opposite edges 01' its sides, each slit terminating adjacent the opposite edge from which it extends and being of greatest width at its open end.

3. A glass run channel comprising a generally channel shaped core portion of flat, continuous sheet metal, said core portion having transverse slits extending alternately from opposite edges of its sides, each slit terminating adjacent the opposite edge from which it extends and decreasing in width from its open to its closed end.

4. A glass run channel comprising a generally channel shaped core portion of flat, continuous sheet metal, said core portion having transverse slitsextending alternately from opposite edges of its sides, each slit terminating adjacent. the opposite edge from whlch it extends and tapering in V-form from its open to its closed end.

5. A glass run channel comprising a generally channel shaped coreportion of flat, continuous sheet metal, said core portion having transverse slits extending alternately from opposite edges of its sides, each slit terminating adjacent the opposite edge from which it extends and regularly decreasing in width from its open to its closed end, to form a series of alternately and oppositely disposed triangularly shaped openings therein.

6. A glass run channel comprising a generally channel shaped core portion of fiat, continuous sheet metal, said core portion having transverse slits extending alternately from opposite edges of its sides, each slit terminating adjacent the opposite edge from which it extends and tapering in V-form from its open to its closed end, forming openings each of which extends entirely across one side and the base and terminates in the opposite side.

'7. A glass run channel comprising a generally channel shaped core portion of flat, continuous sheet metal, said core portion having transverse slits extending alternately from opposite edges of its sides, each slit terminating adjacent the opposite edge from which it extends and being of greatest width at its open end and a continuous stiffening strip connected to each edge of said core portion and extending throughout the length thereof.

8. A glass run channel comprising a generally channel shaped core portion of flat, continuous sheet metal, said core portion having transverse slits extending alternately from opposite edges of its sides, each slit terminating adjacent the opposite edge from which it extends and being of greatest width at its open end, and a continuous flexible stifiening strip permanently connected to said core portion at each of its edges and extending throughout the length thereof.

9. A glass run channel comprising a generally channel shaped core portion of flat, continuous sheet metal, said core portion having transverse slits extending alternately from opposite edges of its sides, each slit terminating adjacent the opposite edge from which it extends and being of greatest width at its open end and a flexible reinforcing wire extending continuously along each edge of said core portion, the edge portions thereof being bent about said wires to form a permanent connection therewith.

10. A glass run channel comprising a generally channel shaped core composed of a strip of continuous sheet metal bent to form a base and side wall portions and having transverse slits extending alternately from opposite edges of its sides, each slit terminating adjacent the opposite edge from which it extends.

I DANIEL A. GREENE. 

